Charge-transfer excitons in strongly coupled organic semiconductors

Jean-François Glowe; Mathieu Perrin; David Beljonne; Sophia C. Hayes; Fabrice Gardebien; Carlos Silva

doi:10.1103/PhysRevB.81.041201

Journal articles

Charge-transfer excitons in strongly coupled organic semiconductors

Jean-François Glowe ¹ Mathieu Perrin ¹ David Beljonne ^{2, 3} Sophia C. Hayes ⁴ Fabrice Gardebien ⁵ Carlos Silva ¹

1 UdeM - Université de Montréal

2 Laboratory for Chemistry of Novel Materials

3 Georgia Institute of Technology [Atlanta]

4 University of Cyprus [Nicosia]

5 DSIMB Réunion - Dynamique des Structures et Interactions des Macromolécules Biologiques - Pôle de La Réunion

BIGR (UMR_S_1134 / U1134) - Biologie Intégrée du Globule Rouge

Abstract : Time-resolved and temperature-dependent photoluminescence measurements on one-dimensional sexithiophene lattices reveal intrinsic branching of photoexcitations to two distinct species: self-trapped excitons and dark charge-transfer excitons (CTXs; ≳5% yield), with radii spanning 2–3 sites. The significant charge-transfer exciton (CTX) yield results from the strong charge-transfer character of the Frenkel exciton band due to the large free-exciton bandwidth (∼400 meV) in these supramolecular nanostructures.

Document type :

Journal articles

Domain :

Life Sciences [q-bio] / Biochemistry, Molecular Biology

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https://hal.univ-reunion.fr/hal-01198470
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Submitted on : Sunday, September 13, 2015 - 2:30:04 PM
Last modification on : Wednesday, November 24, 2021 - 3:41:12 AM

Charge-transfer excitons in strongly coupled organic semiconductors

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Charge-transfer excitons in strongly coupled organic semiconductors

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